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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\DiscussionTools; |
| 4 | |
| 5 | use MediaWiki\Api\ApiBase; |
| 6 | use MediaWiki\Api\ApiMain; |
| 7 | use MediaWiki\Api\ApiUsageException; |
| 8 | use MediaWiki\Extension\DiscussionTools\Hooks\HookUtils; |
| 9 | use MediaWiki\Extension\DiscussionTools\ThreadItem\CommentItem; |
| 10 | use MediaWiki\Extension\DiscussionTools\ThreadItem\ContentCommentItem; |
| 11 | use MediaWiki\Extension\DiscussionTools\ThreadItem\ContentHeadingItem; |
| 12 | use MediaWiki\Extension\DiscussionTools\ThreadItem\ContentThreadItem; |
| 13 | use MediaWiki\Extension\VisualEditor\VisualEditorParsoidClientFactory; |
| 14 | use MediaWiki\Revision\RevisionLookup; |
| 15 | use MediaWiki\Revision\RevisionRecord; |
| 16 | use MediaWiki\Title\Title; |
| 17 | use Wikimedia\ParamValidator\ParamValidator; |
| 18 | use Wikimedia\Parsoid\DOM\Element; |
| 19 | use Wikimedia\Parsoid\DOM\Text; |
| 20 | use Wikimedia\Parsoid\Utils\DOMUtils; |
| 21 | |
| 22 | class ApiDiscussionToolsPageInfo extends ApiBase { |
| 23 | |
| 24 | private CommentParser $commentParser; |
| 25 | private VisualEditorParsoidClientFactory $parsoidClientFactory; |
| 26 | private RevisionLookup $revisionLookup; |
| 27 | |
| 28 | public function __construct( |
| 29 | ApiMain $main, |
| 30 | string $name, |
| 31 | VisualEditorParsoidClientFactory $parsoidClientFactory, |
| 32 | CommentParser $commentParser, |
| 33 | RevisionLookup $revisionLookup |
| 34 | ) { |
| 35 | parent::__construct( $main, $name ); |
| 36 | $this->parsoidClientFactory = $parsoidClientFactory; |
| 37 | $this->commentParser = $commentParser; |
| 38 | $this->revisionLookup = $revisionLookup; |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * @inheritDoc |
| 43 | * @throws ApiUsageException |
| 44 | */ |
| 45 | public function execute() { |
| 46 | $params = $this->extractRequestParams(); |
| 47 | $this->requireAtLeastOneParameter( $params, 'page', 'oldid' ); |
| 48 | $threadItemSet = $this->getThreadItemSet( $params ); |
| 49 | |
| 50 | $result = []; |
| 51 | $prop = array_fill_keys( $params['prop'], true ); |
| 52 | |
| 53 | if ( isset( $prop['transcludedfrom'] ) ) { |
| 54 | $result['transcludedfrom'] = static::getTranscludedFrom( $threadItemSet ); |
| 55 | } |
| 56 | |
| 57 | if ( isset( $prop['threaditemshtml'] ) ) { |
| 58 | $excludeSignatures = $params['excludesignatures']; |
| 59 | $result['threaditemshtml'] = static::getThreadItemsHtml( $threadItemSet, $excludeSignatures ); |
| 60 | } |
| 61 | |
| 62 | $this->getResult()->addValue( null, $this->getModuleName(), $result ); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Get the thread item set for the specified revision |
| 67 | * |
| 68 | * @throws ApiUsageException |
| 69 | * @param array $params |
| 70 | * @return ContentThreadItemSet |
| 71 | */ |
| 72 | private function getThreadItemSet( $params ) { |
| 73 | if ( isset( $params['page'] ) ) { |
| 74 | $title = Title::newFromText( $params['page'] ); |
| 75 | if ( !$title ) { |
| 76 | throw ApiUsageException::newWithMessage( |
| 77 | $this, |
| 78 | [ 'apierror-invalidtitle', wfEscapeWikiText( $params['page'] ) ] |
| 79 | ); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | if ( isset( $params['oldid'] ) ) { |
| 84 | $revision = $this->revisionLookup->getRevisionById( $params['oldid'] ); |
| 85 | if ( !$revision ) { |
| 86 | throw ApiUsageException::newWithMessage( |
| 87 | $this, |
| 88 | [ 'apierror-nosuchrevid', $params['oldid'] ] |
| 89 | ); |
| 90 | } |
| 91 | } else { |
| 92 | $title = Title::newFromText( $params['page'] ); |
| 93 | if ( !$title ) { |
| 94 | throw ApiUsageException::newWithMessage( |
| 95 | $this, |
| 96 | [ 'apierror-invalidtitle', wfEscapeWikiText( $params['page'] ) ] |
| 97 | ); |
| 98 | } |
| 99 | $revision = $this->revisionLookup->getRevisionByTitle( $title ); |
| 100 | if ( !$revision ) { |
| 101 | throw ApiUsageException::newWithMessage( |
| 102 | $this, |
| 103 | [ 'apierror-missingrev-title', wfEscapeWikiText( $title->getPrefixedText() ) ], |
| 104 | 'nosuchrevid' |
| 105 | ); |
| 106 | } |
| 107 | } |
| 108 | $title = Title::castFromPageIdentity( $revision->getPage() ); |
| 109 | |
| 110 | if ( !$title || !HookUtils::isAvailableForTitle( $title ) ) { |
| 111 | // T325477: don't parse non-discussion pages |
| 112 | return new ContentThreadItemSet; |
| 113 | } |
| 114 | |
| 115 | $this->checkTitleUserPermissions( $title, 'read' ); |
| 116 | |
| 117 | if ( !$revision->audienceCan( RevisionRecord::DELETED_TEXT, RevisionRecord::FOR_PUBLIC ) ) { |
| 118 | $this->dieWithError( [ 'apierror-missingcontent-revid', $revision->getId() ], 'missingcontent' ); |
| 119 | } |
| 120 | |
| 121 | $status = HookUtils::parseRevisionParsoidHtml( $revision, __METHOD__ ); |
| 122 | if ( !$status->isOK() ) { |
| 123 | $this->dieStatus( $status ); |
| 124 | } |
| 125 | return $status->getValueOrThrow(); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Get transcluded=from data for a ContentThreadItemSet |
| 130 | */ |
| 131 | private static function getTranscludedFrom( ContentThreadItemSet $threadItemSet ): array { |
| 132 | $threadItems = $threadItemSet->getThreadItems(); |
| 133 | $transcludedFrom = []; |
| 134 | foreach ( $threadItems as $threadItem ) { |
| 135 | $from = $threadItem->getTranscludedFrom(); |
| 136 | |
| 137 | // Key by IDs and names. This assumes that they can never conflict. |
| 138 | |
| 139 | $transcludedFrom[ $threadItem->getId() ] = $from; |
| 140 | |
| 141 | $name = $threadItem->getName(); |
| 142 | if ( isset( $transcludedFrom[ $name ] ) && $transcludedFrom[ $name ] !== $from ) { |
| 143 | // Two or more items with the same name, transcluded from different pages. |
| 144 | // Consider them both to be transcluded from unknown source. |
| 145 | $transcludedFrom[ $name ] = true; |
| 146 | } else { |
| 147 | $transcludedFrom[ $name ] = $from; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | return $transcludedFrom; |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Get thread items HTML for a ContentThreadItemSet |
| 156 | */ |
| 157 | private static function getThreadItemsHtml( ContentThreadItemSet $threadItemSet, bool $excludeSignatures ): array { |
| 158 | // This function assumes that the start of the ranges associated with |
| 159 | // HeadingItems are going to be at the start of their associated |
| 160 | // heading node (`<h2>^heading</h2>`), i.e. in the position generated |
| 161 | // by getHeadlineNode. |
| 162 | $threads = $threadItemSet->getThreads(); |
| 163 | if ( count( $threads ) > 0 && !$threads[0]->isPlaceholderHeading() ) { |
| 164 | $firstHeading = $threads[0]; |
| 165 | $firstRange = $firstHeading->getRange(); |
| 166 | $rootNode = $firstHeading->getRootNode(); |
| 167 | // We need a placeholder if there's content between the beginning |
| 168 | // of rootnode and the start of firstHeading. An ancestor of the |
| 169 | // first heading with a previousSibling is evidence that there's |
| 170 | // probably content. If this is giving false positives we could |
| 171 | // perhaps use linearWalkBackwards and DomUtils::isContentNode. |
| 172 | $closest = CommentUtils::closestElementWithSibling( $firstRange->startContainer, 'previous' ); |
| 173 | if ( $closest && !$rootNode->isSameNode( $closest ) ) { |
| 174 | $range = new ImmutableRange( $rootNode, 0, $rootNode, 0 ); |
| 175 | $fakeHeading = new ContentHeadingItem( $range, false, null ); |
| 176 | $fakeHeading->setRootNode( $rootNode ); |
| 177 | $fakeHeading->setName( 'h-' ); |
| 178 | $fakeHeading->setId( 'h-' ); |
| 179 | array_unshift( $threads, $fakeHeading ); |
| 180 | } |
| 181 | } |
| 182 | $output = array_map( static function ( ContentThreadItem $item ) use ( $excludeSignatures ) { |
| 183 | return $item->jsonSerialize( true, static function ( array &$array, ContentThreadItem $item ) use ( |
| 184 | $excludeSignatures |
| 185 | ) { |
| 186 | if ( $item instanceof ContentCommentItem && $excludeSignatures ) { |
| 187 | $array['html'] = $item->getBodyHTML( true ); |
| 188 | } else { |
| 189 | $array['html'] = $item->getHTML(); |
| 190 | } |
| 191 | |
| 192 | if ( $item instanceof ContentHeadingItem ) { |
| 193 | $array['commentCount'] = $item->getCommentCount(); |
| 194 | $array['authorCount'] = count( $item->getAuthorsBelow() ); |
| 195 | $lastestReply = $item->getLatestReply(); |
| 196 | if ( $lastestReply ) { |
| 197 | $array['latestReplyTimestamp'] = |
| 198 | wfTimestamp( TS_ISO_8601, $lastestReply->getTimestamp()->getTimestamp() ); |
| 199 | } else { |
| 200 | $array['latestReplyTimestamp'] = null; |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | if ( $item instanceof CommentItem ) { |
| 205 | // We want timestamps to be consistently formatted in API |
| 206 | // output instead of varying based on comment time |
| 207 | // (T315400). The format used here is equivalent to 'Y-m-d\TH:i:s\Z' |
| 208 | $array['timestamp'] = wfTimestamp( TS_ISO_8601, $item->getTimestamp()->getTimestamp() ); |
| 209 | } |
| 210 | } ); |
| 211 | }, $threads ); |
| 212 | foreach ( $threads as $index => $item ) { |
| 213 | // need to loop over this to fix up empty sections, because we |
| 214 | // need context that's not available inside the array map |
| 215 | if ( $item instanceof ContentHeadingItem && count( $item->getReplies() ) === 0 ) { |
| 216 | // If there are no replies we want to include whatever's |
| 217 | // inside this section as "othercontent". We create a range |
| 218 | // that's between the end of this section's heading and the |
| 219 | // start of next section's heading. The main difficulty here |
| 220 | // is avoiding catching any of the heading's tags within the |
| 221 | // range. |
| 222 | $nextItem = $threads[ $index + 1 ] ?? false; |
| 223 | $startRange = $item->getRange(); |
| 224 | if ( $item->isPlaceholderHeading() ) { |
| 225 | // Placeholders don't have any heading to avoid |
| 226 | $startNode = $startRange->startContainer; |
| 227 | $startOffset = $startRange->startOffset; |
| 228 | } else { |
| 229 | $startNode = CommentUtils::closestElementWithSibling( $startRange->endContainer, 'next' ); |
| 230 | if ( !$startNode ) { |
| 231 | // If there's no siblings here this means we're on a |
| 232 | // heading that is the final heading on a page and |
| 233 | // which has no contents at all. We can skip the rest. |
| 234 | continue; |
| 235 | } else { |
| 236 | $startNode = $startNode->nextSibling; |
| 237 | $startOffset = 0; |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | if ( !$startNode ) { |
| 242 | $startNode = $startRange->endContainer; |
| 243 | $startOffset = $startRange->endOffset; |
| 244 | } |
| 245 | |
| 246 | if ( $nextItem ) { |
| 247 | $nextStart = $nextItem->getRange()->startContainer; |
| 248 | $endContainer = CommentUtils::closestElementWithSibling( $nextStart, 'previous' ); |
| 249 | $endContainer = $endContainer && $endContainer->previousSibling ? |
| 250 | $endContainer->previousSibling : $nextStart; |
| 251 | $endOffset = CommentUtils::childIndexOf( $endContainer ); |
| 252 | if ( $endContainer instanceof Text ) { |
| 253 | // This probably means that there's a wrapping node |
| 254 | // e.g. <div>foo\n==heading==\nbar</div> |
| 255 | $endOffset += $endContainer->length; |
| 256 | } elseif ( $endContainer instanceof Element && $endContainer->tagName === 'section' ) { |
| 257 | // if we're in sections, make sure we're selecting the |
| 258 | // end of the previous section |
| 259 | $endOffset = $endContainer->childNodes->length; |
| 260 | } elseif ( $endContainer->parentNode ) { |
| 261 | $endContainer = $endContainer->parentNode; |
| 262 | } |
| 263 | $betweenRange = new ImmutableRange( |
| 264 | $startNode, $startOffset, |
| 265 | $endContainer ?: $nextStart, $endOffset |
| 266 | ); |
| 267 | } else { |
| 268 | // This is the last section, so we want to go to the end of the rootnode |
| 269 | $betweenRange = new ImmutableRange( |
| 270 | $startNode, $startOffset, |
| 271 | $item->getRootNode(), $item->getRootNode()->childNodes->length |
| 272 | ); |
| 273 | } |
| 274 | $fragment = $betweenRange->cloneContents(); |
| 275 | CommentModifier::unwrapFragment( $fragment ); |
| 276 | $otherContent = trim( DOMUtils::getFragmentInnerHTML( $fragment ) ); |
| 277 | if ( $otherContent ) { |
| 278 | // A completely empty section will result in otherContent |
| 279 | // being an empty string. In this case we should just not include it. |
| 280 | $output[$index]['othercontent'] = $otherContent; |
| 281 | } |
| 282 | |
| 283 | } |
| 284 | } |
| 285 | return $output; |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * @inheritDoc |
| 290 | */ |
| 291 | public function getAllowedParams() { |
| 292 | return [ |
| 293 | 'page' => [ |
| 294 | ApiBase::PARAM_HELP_MSG => 'apihelp-visualeditoredit-param-page', |
| 295 | ], |
| 296 | 'oldid' => [ |
| 297 | ParamValidator::PARAM_TYPE => 'integer', |
| 298 | ], |
| 299 | 'prop' => [ |
| 300 | ParamValidator::PARAM_DEFAULT => 'transcludedfrom', |
| 301 | ParamValidator::PARAM_ISMULTI => true, |
| 302 | ParamValidator::PARAM_TYPE => [ |
| 303 | 'transcludedfrom', |
| 304 | 'threaditemshtml' |
| 305 | ], |
| 306 | ApiBase::PARAM_HELP_MSG_PER_VALUE => [], |
| 307 | ], |
| 308 | 'excludesignatures' => false, |
| 309 | ]; |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * @inheritDoc |
| 314 | */ |
| 315 | public function needsToken() { |
| 316 | return false; |
| 317 | } |
| 318 | |
| 319 | /** |
| 320 | * @inheritDoc |
| 321 | */ |
| 322 | public function isInternal() { |
| 323 | return true; |
| 324 | } |
| 325 | |
| 326 | /** |
| 327 | * @inheritDoc |
| 328 | */ |
| 329 | public function isWriteMode() { |
| 330 | return false; |
| 331 | } |
| 332 | } |